Separation anxiety something else?

I have a 9 month old daughter, her name is Mila. Recently she’s been very very attached to me. I am a stay at home mom. She likes to play with her toys on the rug and her play mat while she watches her shows that she likes. When she sees me get up and go to the kitchen or the bathroom or anywhere without her she starts bawling her eyes out. She won’t stay with anyone. Not even her dad. The only person she stays with is my older sister ( maybe because she kinda looks like me ) it’s exhausting not being able to do anything without her crying and screaming her head off. I am 16 weeks pregnant, my mom says that she’s like that right now because I’m pregnant ? Idk but any suggestions on how to help her not be so attached or have separation anxiety?